1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet.wiki.filters;
24  
25  import com.liferay.portal.kernel.util.StringUtil;
26  
27  import java.util.regex.Matcher;
28  import java.util.regex.Pattern;
29  
30  import org.stringtree.factory.AbstractStringFetcher;
31  
32  /**
33   * <a href="CodeBlock.java.html"><b><i>View Source</i></b></a>
34   *
35   * @author Raymond Augé
36   */
37  public class CodeBlock extends AbstractStringFetcher {
38  
39      public Object getObject(String content) {
40          StringBuilder sb = new StringBuilder();
41  
42          Matcher matcher = _pattern.matcher(content);
43  
44          if (matcher.matches()) {
45              sb.append("<div class=\"wiki-code\">");
46  
47              String[] lines = matcher.group(1).split("\\n");
48  
49              for (int i = 0; i < lines.length; i++) {
50                  if (i != 0) {
51                      sb.append("<br />");
52                  }
53  
54                  String translation = StringUtil.replace(
55                      lines[i],
56                      new String[] {
57                          "\\s",
58                          "<",
59                          ">",
60                          "=",
61                          "\"",
62                          "'",
63                          "\t"
64                      },
65                      new String[] {
66                          "&nbsp;",
67                          "&lt;",
68                          "&gt;",
69                          "&#x003D;",
70                          "&#0034;",
71                          "&#0039;",
72                          "&nbsp;&#8594;&nbsp;"
73                      });
74  
75                  int padlength =
76                      String.valueOf(lines.length).length() -
77                      String.valueOf(i + 1).length();
78  
79                  String padding = "";
80  
81                  for (int j = 0; j < padlength; j++) {
82                      padding += "&#0149;";
83                  }
84  
85                  sb.append("<span class=\"code-lines\">");
86                  sb.append(padding + (i + 1));
87                  sb.append("</span>");
88  
89                  sb.append(translation);
90              }
91  
92              sb.append("</div>");
93  
94              content = sb.toString();
95          }
96  
97          return content;
98      }
99  
100     private static Pattern _pattern = Pattern.compile(
101         "\\[code\\]((.|\\n)*?)\\[/code\\]",
102         Pattern.MULTILINE | Pattern.UNIX_LINES);
103 
104 }